Ventilating chimney



NOV- 25, 1952, R. G. HERGENROTHER 2,619,022

VENTILATING CHIMNEY Filed Feb. 20, 1950 Patented Nov. 25, 1952 UNITED STAT E S 2,619,022:

VENTILATING CHIMNEY Richard G. Hergenrother, NewvBrunswick, N.'.J..

Application February 20, 1950SerialNo. 145,295.

This invention relates to aventilating chimney.

It is an object of the present invention to provide a Ventilating chimney which is of lighter weight than the usual brick construction and requires no special footing and can be prefabricated and quickly erected on the premises by the simple joining of two or more sections.

It is another object of the present invention to improve the efficiency of a furnace by reducing the chimney and stack temperature and to provide positive adjustable ventilation at all times within the building regardless of whether the furnace is operating or not.

It is another object of the present invention to improve the effectiveness of weather stripping within the household since the air consumed in combustion is drawn mainly from openings above the roof and not through cracks around windows, or doors of the building.

Other objects of the present invention are to provide a Ventilating chimney which is of simple construction, is inexpensive to manufacture, has a minimum number of parts, is compact, saves building time, is easy to assemble and is ecient in operation.

For other objects and for a better understanding of the invention, reference may be had to the following detailed description taken in connection with the accompanying drawing, in which Fig. 1 is a vertical sectional view of the ventilating chimney embodying the features of the present invention.

Fig. 2 is a fragmentary perspective View showing the opening at the top of the Ventilating chamber surrounding the chimney.

Referring now to the figures, I represents a chimney which is supported on a footing II on the basement floor I2 of a building structure I3. A furnace or boiler I4 is connected to the chimney I0 through a pipe section I5 so that the gases and smoke can be drained oif and passed up the chimney. An automatic draft control damper 26 is installed to control the amount of draft in the case of automatically fired furnaces. A conventional clean out door 36 is installed at the bottom of the chimney to facilitate soot removal.

Surrounding the chimney I0 and about twice the diameter thereof is a Ventilating tube I6 that has a plurality of outwardly struck portions I1 at the upper end providing for Ventilating openings I8 that are screened, as indicated at I9, and are underneath the struck up portion so that there is little opportunity for rain water to enter the tube. The upper end of the tube is reduced in diameter, as indicated at 2l, and tapered so L Claim. (Cl. 98-46-)-` asV to be connected to theA upper end; of thechimney and to close off` the Ventilatingv passage.

The lower end of the Ventilating tube I6 is connected by a pipe 23 with a burner 24 that enters the boiler I4. A bypass pipe 25 provides a passage leading from the lower end of the tube I 6 for air to the lower end of the stack and past damper 26.

In operation, as the burner 24 starts, the air needed for combustion is drawn downwardly through the Ventilating tube and through adjustable Vents 2'I and 28 in the rooms of the building structure I3. During the passage down the Ventilating tube, the air will be given a spiral motion because of spiral baie 29 disposed therein. This air, as it passes downwardly, is heated from contact with the chimney so that the temperature of the gases within the chimney is reduced. When the air reaches the bottom of the ventilating tube, it is drawn off through the pipe 23 directly into the burner 24 where it serves to mix with the fuel to support the combustion within the furnace or boiler I4.

At times when the furnace is not operated, the rooms are ventilated in the same manner, but the stale air rises up the Ventilating tube and out of the roof openings I8 instead of being sucked down into the burner. In case of a back draft through the furnace, a check damper 3I is provided in the pipe 23. The conventional automatic draft control damper 26 is used to regulate the draft.

An additional room can be connected to the Ventilating tube by a pipe 33 running through the attic to a room 34 and controlled by a damper 35.

It will be apparent that there has been provided a simple chimney structure that can be prefabricated and quickly erected on the basement floor which includes a Ventilating tube whereby the chimney can be cooled as a result of the downward movement of air which supplies the burner. The stack temperature is thereby reduced and the efficiency of the heating plant is improved.

The Ventilating chimney may also be used in connection with a hand fired furnace, in which case pipe 23 is cut 01T at any convenient length and check damper 3I is installed at the end of the pipe opening. Draft control damper 26 would not be necessary with this type of installation.

While various changes may be made in the detail construction, it shall be understood that such changes shall be within the spirit and scope of the present invention as defined by the appended claim.

wardly through a building structure and to be 5 supported upon the basement oor, a Ventilatingr tube surrounding the chimney stack, said Ventilating tube adapted to extend above the building structure and having openings for the passage of air through the Ventilating tube over the roof of the building, said Ventilating tube being closed upon the chimney above the roof of the building and above the Ventilating openings, said ventilating tube being open at the lower end and adapted for connection with a fuel burner, the said building structure having rooms disposed at diierent levels and Vents leading from the said rooms to the said Ventilating tube in order to draw additional air through the said Vents from the said rooms, and a spiral plate extending about the chimney and Within the Ventilating tube whereby to cause a spiral path for the oW of air through the Ventilating tube.

RICHARD G. HERGENROTHER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 10 Number Name Date 54,830 Eaton May 15, 1866 182,575 Halstead Sept. 26, 1876 515,482 Richmond Feb. 27, 1894 572,174 Moon Dec. 1, 1896 15 1,550,873 Frodbeck Aug. 25, 1925 FOREIGN PATENTS Number Country Date 1,048 Great Britain 1885 8,125 Great Britain 1884 327,765 France July 2, 1903 

